Roof-collar for vent-pipes.



' chusetts,

V of roof-colla-r and joint-forming elements means operated from beneath the roof,

4place in position on the roof, when shinv vent-pipe up through the roof and collar,

joint produced.

nrrran .rarnnr nianie, I CHARLES L HOLTTF LAWRDVI'CE, MAssAoH'Usn'rrs.

BOOF-COLLAR FOR VENT-PIPES.

Specification of Letters Patent.

Application filed December 27, 1909. Serial No. 535,968.

To all whom it' may Gomera."

Be it known that CHARLES L. HOLT, of Lawrence, county of Essen, State of Massahave invented an mprovement in Roof-Collars for Vent-lipes, of which the following is a specification.

This invention has for its object the construction of an improved roof-'collar for vent-pipes, and particnlarly` to the construction of the external joint, whereby a tight l joint is produced between the collar andI vent-pipe, at a point above the -roof, byl

j .to fit .the opening at the bottom of the collar, is adapted to be ing, to thereby force the lip-turned edge 2)' of a flashing firmly against the interior wall of the collar. i

A compressible ring (Z, is employed, which vis designed. to rest on the seat ae, -at the top of, the collar. It may be made 'of lead, or asbestos, or other suitable material. As here shown, it is madeof lead, by Cutting out a flat disk with a center-hole through it androlling or bending it into tubular form, see Fig. ;5. Such a ring subserves all the purposeslof this invention. It is designed and intended that said compressible rin when compressed, shall firmly and intimately engage the vent-pipe a, which is prothereby not only avoiding the use of molten metal in making the joint, but also obviating the necessity of the plumber going on to the roof. i j

The invention involves an improved form plish this result a a flat ring, is placed on said compressible ring, and bolts g extend through holes in said plate and ring and down along the inside of the collar and through holes in" the ring c, and nuts f/ are arranged on the upthe joint-forming elements may be operated per ends of said bolts, or sald upper ends by him, from beneath the roof, and a tight \n1ay be formed with heads in lieu thereof, and nuts 92 are arranged on the lower ends .of said bolts.

The parts are loosely assembled for shipment and are placed -in position on the roof of a building by the Carpenter while he is working on the roof, and When so placed in position thereon the nuts ;72 are accessible through the hole made in the roof by the Carpenter, see Fig. 1.' .The plunlber projects the ventpipe up through the collar and then tightens u .the uuts gt, thereby drawing the bolts dhwn and compressing the ring d, to cause itto firmly and intimately engage the vent-pipe, see Fig. 3, and also to force up the tapered ring c to cause it to firmly engage the Lip-turned portion b' of the fiashing, and firmly clamp said edge in position. The time takenby the phuuber to thus make the joint, having all the joint forming elements at hand and requiring on his part nier'ely the labor of tightening the nuts g, becomes an inconsequential item of expense, as contrasted with the expense of making an external joint by the plumber going on the roof.

' claim:

in assernbled form which a Carpenter can gling the roof, or otherwise working upon 1t, so that, when the plumber projects the .4 Figure l is a Vertical section of a roof-collar for vent-pipes embodyingthis invention, the vent-pipe having been projected up through the collar and the joinbforming elements being in their normal positions. Fig. 2 is a plan view of'the device, some of the parts being broken'away. Fig. 3 is a sectional detail of the joint.l Fig. 4 is a side elevation of the several parts. Fig. 5 is an under side view of the compressible ring, which serves as the essential joint-forming element.

Va represents the roof-collar, which, as here shown, consists of'a tapering tubular cylinf der having a fiange a' at the bottom and a seat (ze at the top, formed by beveling the top ,from the outside toward the inside. The bottom of the collar may be formed at any angle desired, according to the pitch of the roof, or it may be made horizontal to accommodate a flat roof.

A fiashing Z) is employed, which consists of a'fiat Sheet of copper or equivalent material having a center-hole through it and having its edge, at the hole, turned up, as at b', to engage the under side of the collar a. Said-up-tnrned Vportion b'- may be of any suitable length. A ring c, made ltapet'- ing in cross-section, and of a shape and size bottom and a seatat the top, a compressiblering arranged on said seat, and means accessible from beneath the roof for compresspushed into said openjected up-through the collar, and to accom-' pressure-plate f, made as rateatea samo, info.

1. A roof-collar having a fiange at the ing said ring` to ('zinse it to intimately e11- gfw'e the Yont--pipe und produce ;i tight zmnt, snhstnntielly ns doscribed.

2. A root-collnr having a fiange at.- the bottoni and a seat nt. the top, a (roinpressiblering erranged on said seat, :t pressure-plate arrnnged on Said ring, and lmeans accessible from beneeth the root for cxerting pressure upon said plate to compress the ring and cenne to intiinately engztge the Yent-pipe end prodnce a tight joint, substztntially as deserihed.

3. root-collnr having a finnge at the hottom and 21 seat nt the top, a compressible ring arranged on said seat., a pressure-plate arranged on said ring and bolts extending through Said pressure-plate and ring and uocessihle from beneath the root, Wherehy pressure may be exerted on said plate to eompress the ring, substnntially ns described.

roof-collar having a flange at the hottoin and :i seat atthe top, a eompressiblering` arranged on said seat, oonsisting .of a tnlnilar ring of sheet metal, and means 'for eonipressing said ring to cause it to engage the Vent-pipe, substantially as described.

A roof-eollar having :L fiange at; the bottoin, a, flashing having a center-hole through it and an np-turned fiange at the edge of sidhole7 adnpted to project np into the opening ut the bottoni of the collar, and a clznnping-ring for engaging said iamnge snbstantially as described.

6. r roo-'eollar having a flango at the hottorn end a seat at the top, e compressible ring nrranged on said seat, a fiashing at the bottoin of said collar having an upturned central fiange adapted to engage the ntei'ior of the eollar, a tapered ring adapted to enter the opening tt the bottoin of the .collar and clanip np-turned fiange in position, and means for moving up said tapered ring and for also ooinpressing said compressible-ring, substantially ns described.

T. roof-collar having a fiange at the bottorn and a seat nt the top, a eoinpressiblering arranged on said seat, a fiashing at the bottoin otsziid collar having an Lip-turned central fiange adzipted to 'engage the interior ot' the collar, a tapered ring adapted to enter the opening nt the bottom of the collar and clarnp the Lip-turned fiange in position, and bolts extending through said compressible-ring and said tapered ring, Whereby the forrner may be conipressed and the letter inoved up into the opening :it the bottorn of the collar, snbstantially 21s de seriloed.

8. A roof-collar having a flzinge :it the bottom and a seat atthe top, a compressiblering arranged on said seat, a pressure-plate arra'nged on Said rinfl', a flashing at the bottom of said collar having an itp-turned central fiange adapted to project up into the opening at the bottom of the eollar7 a tapered ring adepted to enter said opening at the bottom of the collar and engage said fiange, and bolts extending down through the said pressure-plate and coinpressihlering and tapered ring, which are arranged on the inside of the collar, substnntinlly ns described.

In testimony'whereof, I have signed my name to this speoification` in the presence of two subscribing Witnesses.l

CHARLES L. HoL'r.

Witnesses B. J. NoYns, H. B. DAVIS. 

